Another version of RecommenderJob that broadcasts the similarity matrix
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Key: MAHOUT-827
URL: https://issues.apache.org/jira/browse/MAHOUT-827
Project: Mahout
Issue Type: New Feature
Components: Collaborative Filtering
Affects Versions: 0.6
Reporter: Sebastian Schelter
Assignee: Sebastian Schelter
Add another version of RecommenderJob that computes the item similarities via
RowSimilarityJob but assumes that the resulting similarity matrix fits into the
memory of the mappers in the cluster. After the item similarity computation is
done, the similarities are broadcasted via Hadoop's distributed cache and the
recommendations are computed in a map-only pass over the data afterwards.
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